Treated wastewater effluent is a potential environmental point source for antidepressant pharmaceuticals. A quantitative method was developed for the determination of trace levels of antidepressants in environmental aquatic matrixes using solid-phase extraction coupled with liquid chromatography-electrospray ionization tandem mass spectrometry. Recoveries of parent antidepressants from matrix s...

Currently in many cities and rural areas of Vietnam, wastewater is discharged to the environment without any treatment, which emits considerable amount of greenhouse gas (GHG), particularly methane. In this study, four GHG emission scenarios were examined, as well as the baseline scenario, in order to verify the potential of GHG reduction from domestic wastewater with adequate treatment facilit...

Raised public expectation and increasing politicalpressure, in the face of mounting evidence thatsubstantial numbers of on-site wastewater disposalsystems perform poorly or fail, has resulted in therevision of State Government Guidelines and theAustralian Standard 1547. These revised guidelinesrequire a wider range of skills of Environmental HealthOfficers and others...

The aim of this work was to design a quick and reliable method for the evaluation and classification of wastewater streams into treatable and non-treatable effluents for reuse/recycling. Different chemometric methods were used for this purpose handling the enormous amount of data, and additionally to find any hidden information, which would increase our knowledge and improve the classification....

1. Water Management Systems: A Brief History 1.1 Greco-Roman Influence on Water Management 1.2 Water Supply and the Industrial Revolution 1.3 Water Engineering in the 20 Century 2. Conventional Sewage Treatment Techniques 3. Third Generation Wastewater Treatment Systems 3.1 Facultative Ponds 3.2 Constructed Wetlands 3.2.1 Limiting Factors of Wetland Processes 4. Reassessing the Conventional Sys...

Packed bed reactor finds wide application in wastewater treatments. Packed bed reactors can be employed for aerobic and anaerobic biological treatment of wastewater. They can also be used for physico-chemical treatments such as activated carbon adsorption of various pollutants from wastewater. Packed beds with up flow and down flow mechanisms are widely used for wastewater treatment. Use of flu...

The chemical composition of pectin production wastewater and its toxicity during biological treatment were investigated. Samples of wastewater from different steps of a pectin production wastewater biological treatment plant were investigated including the influent of the treatment (1), after denitrification tank (2), after anaerobic treatment (3) and final effluent (4). The conventional physic...

Ammonium removal is a key step in biological wastewater treatment and novel approaches that improve this process are in great demand. The aim of this study is to test the hypothesis that ammonium removal from wastewater can be stimulated by static magnetic fields. This was achieved by analysis of the effects of static magnetic field (SMF) on the growth and activity of Nitrosomonas europaea, a k...

A total of 49 wastewater samples from 23 different wastewater treatment plants (WWTPs) were analyzed using real-time quantitative polymerase chain reaction for the presence and quantity of thermotolerant campylobacters. Thermotolerant campylobacters were detected in 87.5% (21/24) and 64% (16/25) of untreated and treated wastewater samples, respectively. Their concentration was sufficiently high...

The size, shape and slope of pipes are major components of the overall cost of wastewater collection systems. In the past, designers have used charts and specialized rules to determine the size, slopes and materials when designing wastewater collection networks. However, genetic algorithms (GA) provide powerful technique for automating the design and minimizing the construction costs of wastewa...